Speaker verification (SV) technology, which determines the identity of a speaker from their voice, is widely used across the world as a form of biometric identification [1]}. Applications range from devices like mobile phones and smart speakers to transactional, investment and mobile banking, call centers and proof-of-life verification of pensioners. While unobtrusive, SV is extremely sensitive to the recording hardware, the deployment context and environment [2]}. Moreover, it is also sensitive to the demographic attributes of speakers [3]}.
